@inproceedings{c76456d3f30c47449bbee4c528cb92f0,
title = "Modal analysis of a turbine blade based on fluid-thermal-structural coupling",
abstract = "The dynamic analysis of a turbine blade is carried out. The pre-stress due to rotation and fluid-thermal-structure coupling effect are considered. At first flow analysis and thermal analysis on the blade and corresponding stator-rotor blade passage are conducted to acquire the flow field and body temperature field of blade. Then stress in the blade is analyzed considering pressure and temperature in a static condition, and the matrix for pre-stress effect and an additional matrix due to the external temperature and pressure loading are obtained. And so the dynamic equation of the blade system including the pre-stress effect and the coupling effect is established. The frequencies and vibration modes of the blade system in six different coupling conditions are obtained by using of ANSYS and CFX. It is found that the fluid-thermal-structural coupling field has a significant influence on the blade natural frequencies. Also, the impact of temperature on frequency is embodied more in the change of material elastic modulus E with temperature than in the thermal stress caused by temperature gradient.",
keywords = "Coupling, Fluid-thermal-structural, Modal analysis, Turbine blade",
author = "Qiang Zhang and Wei Zhao and Liu, \{Tian Yuan\} and Xie, \{Yong Hui\}",
note = "Publisher Copyright: {\textcopyright} (2014) Trans Tech Publications, Switzerland.; 3rd International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2014 ; Conference date: 30-07-2014 Through 31-07-2014",
year = "2014",
doi = "10.4028/www.scientific.net/AMM.641-642.300",
language = "英语",
series = "Applied Mechanics and Materials",
publisher = "Trans Tech Publications Ltd",
pages = "300--303",
editor = "Xun Wu and Weizhen Chen and Weijun Yang and Jianguo Liang",
booktitle = "Hydraulic Engineering and Sustainable City Development III",
}